Polyprotic - Study guides, Class notes & Summaries

MCAT Biochemistry Latest Updated 2024 With Complete Solutions what kind of acids are amino acids? - weak polyprotic acids - amphoteric - acidic pH: fully protonated - basic pH: fully protonated - neutral pH: zwitterion Explain a peptide bond formation - condensation (dehydration rxn) - nucleophilic amino group attacks electrophilic carbonyl group. - peptide bonds broken by hydrolysis structural proteins - collagen, elastin, keratin, actin, tubulin motor proteins - capable of force ...

100 Biochemistry Exam 1 Questions with correct answers. Graded A Document Content and Description Below 100 Biochemistry Exam 1 Questions with correct answers Which of the following is found in RNA but not DNA A) Uracil B) Guanine C) Deoxyribose D) Phosphate E) Adenine >>>>Uracil Which of the fo llowing amino acids exhibits significant ultraviolet absorption above 250 nm? A) Alanine B) Tyrosine C) Methonine D) Glycine E) All of the above >>>>Tyrosine Collagen fibers hav...

Arrhenius acid rule - correct answer a chemical compound that increases the concentration of hydrogen ions, H+, when dissolves in aqueous solution Arrhenius acid example - correct answer HCl. H3O+ Arrhenius base rule - correct answer a substance that increases the concentration of hydroxide ions when it dissolves in aqueous solution Arrhenius base example - correct answer ...

Chem 104 Exam Questions And Answers Consider the following questions about polyprotic acids and determine if each statement is true or false. - ANS false: For most polyprotic acids, each proton dissociation can not be looked at separately true: For most polyprotic acids Ka1 largely determines the pH of the solution false: for polyprotic acids Ka1 is typically much smaller than Ka2 Which of the following statements about the acid/base properties of salts are true? Which are false? - ...

CIH: Acids and Bases Questions and Answers Rated A+ inorganic acids contains hydrogen and something nonmetallic ex: HCl, H₂SO₃, H₃PO₄ organic acids contain the carboxyl group COOH What is the carboxyl group? formic acid; HCOOH What is the simplest organic acid? What is its formula? - it is naturally found in ant and bee venom acetic acid What acid is: CH₃COOH? lactic acid produced in your body when it goes through strenuous exercise la...

Test Bank for Chemistry: The Molecular Nature of Matter, 8th Edition 8e by Neil D. Jespersen, Alison Hyslop. Full Chapters test bank are included with answers - Chapter 1 to 22 included 0 A Very Brief History of Chemistry 1 0.1 Chemistry’s Important Concepts 2 0.2 Supernovas and the Elements 3 0.3 Elements and the Earth 5 0.4 Dalton’s Atomic Theory 7 0.5 Internal Structure of the Atom 8 Tools for Problem Solving 20 Review Questions and Problems 21 1 Scientific Meas...

What is a Bronsted acid? base? - correct answer 1. Acid: proton donor 2. base: proton acceptor. Water example of amphiprotic substance, why? - correct answer can act as either Brønsted acid or Brønsted base What is a conjugate base/ acid? - correct answer 1. Conjugate base: species that is formed when proton is lost 2. Conjugate acid: species that is formed when proton is gai...

What are the Bronsted-Lowry definitions of acid and base? Acids donate H+ and Bases accept H+ (BAAD) What is the difference between a strong acid and a weak acid? Give examples of each. Strong acids completely dissociate into anion and H+. Weak acids do not dissociate completely into anion and H+, they form an equilibrium system and reform acid and anion and H+ continuously. Strong acid ex. HCl and H2SO4 Weak acid ex. H3PO4 and HC2H3O2 What is the difference between a strong ...

Acid and Bases + Buffer buffer capacity - correct answer a measure of the effectiveness of a buffer solution to resist a change in pH when either a strong acid or strong base is added buffer capacity is greatest when: - correct answer - there is a high concentration of the weak acid and its conjugate base - the concentrations of the acid and its conjugate base are equal. Properties of acids and bases - correct answer Acids- litmus red Sour (vinegar) Frequently burns nose tends to b...

Biochemistry 100% complete Question and Answers 2024 Final Exam enzyme regulation 1. regulated at allosteric site 2. regulated by modifications like phosphorylation on vs. off states negative feedback- product inhibits enzyme positive feedback- product activates enzyme oxytocin is example of positive feedback, needs external regulator to eventually stop process oxidation/reduction loss/gain of hydrogen atoms, gain/loss of charge Bronsted-Lowry acid/base proton donor/acceptor Lewis ...